Sampling system for use with surface ionization spectroscopy
First Claim
1. A gas ion separator for introducing ions into a spectrometer comprising:
- (a) an external ionization source, wherein one or more ions are formed by the external ionization source; and
(b) a jet separator, wherein one or more ions formed by the external ionization source are transmitted through the jet separator into the spectrometer.
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Accused Products
Abstract
In various embodiments of the invention, a device permits more efficient collection and transmission of ions produced by the action of a carrier gas containing metastable neutral excited-state species into a mass spectrometer. In one embodiment of the invention, the device incorporates the source for ionization in combination with a jet separator to efficiently remove excess carrier gas while permitting ions to be more efficiently transferred into the vacuum chamber of the mass spectrometer. In an embodiment of the invention, improved collection of ions produced by the carrier gas containing metastable neutral excited-state species at greater distances from between the position of the analyte and the position of the mass spectrometer are enabled.
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Citations
22 Claims
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1. A gas ion separator for introducing ions into a spectrometer comprising:
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(a) an external ionization source, wherein one or more ions are formed by the external ionization source; and (b) a jet separator, wherein one or more ions formed by the external ionization source are transmitted through the jet separator into the spectrometer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A gas ion separator for introducing analyte ions into a spectrometer comprising:
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(a) an external ionization source, wherein the analyte ions are formed by the external ionization source together with lighter mass carrier gas molecules; and (b) a jet separator, wherein the analyte ions are separated from the lighter mass carrier gas molecules, wherein the analyte ions are transmitted through the jet separator into the spectrometer. - View Dependent Claims (17, 18)
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19. A spectroscopic method of detecting an analyte comprising:
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(a) providing a device including an external ionization source, a jet separator and a spectrometer; (b) using the external ionization source to generate analyte ions together with lighter mass carrier gas molecules; (c) passing the analyte ions through the jet separator; and (d) directing the analyte ions from the jet separator into the spectrometer. - View Dependent Claims (20, 21, 22)
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Specification